Regularized boundary integral equation methods for open-arc scattering problems in thermoelasticity
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866918086319276032 |
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| author | Kong, Yixuan X. Pinto, José Yin, Tao |
| author_facet | Kong, Yixuan X. Pinto, José Yin, Tao |
| contents | This paper devotes to developing novel boundary integral equation (BIE) solvers for the problem of thermoelastic scattering by open-arcs with four different boundary conditions in two dimensions. The proposed methodology is inspired by the Calderón formulas, whose eigenvalues are shown to accumulate at particular points depending only on Lamé parameters, satisfied by the thermoelastic boundary integral operators (BIOs) on both closed- and open-surfaces. Regularized BIEs in terms of weighted BIOs on open-arc that explicitly exhibits the edge singularity behavior, depending on the types of boundary conditions, of the unknown potentials are constructed to effectively reduce the required iteration number to solve the corresponding discretized linear systems. We implement the new formulations utilizing regularizations of singular integrals, which reduces the strongly- and hyper-singular integrals into weakly-singular integrals. Combined with spectrally accurate quadrature rules, numerical examples are presented to illustrate the accuracy and efficiency of the proposed solvers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_05747 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Regularized boundary integral equation methods for open-arc scattering problems in thermoelasticity Kong, Yixuan X. Pinto, José Yin, Tao Numerical Analysis This paper devotes to developing novel boundary integral equation (BIE) solvers for the problem of thermoelastic scattering by open-arcs with four different boundary conditions in two dimensions. The proposed methodology is inspired by the Calderón formulas, whose eigenvalues are shown to accumulate at particular points depending only on Lamé parameters, satisfied by the thermoelastic boundary integral operators (BIOs) on both closed- and open-surfaces. Regularized BIEs in terms of weighted BIOs on open-arc that explicitly exhibits the edge singularity behavior, depending on the types of boundary conditions, of the unknown potentials are constructed to effectively reduce the required iteration number to solve the corresponding discretized linear systems. We implement the new formulations utilizing regularizations of singular integrals, which reduces the strongly- and hyper-singular integrals into weakly-singular integrals. Combined with spectrally accurate quadrature rules, numerical examples are presented to illustrate the accuracy and efficiency of the proposed solvers. |
| title | Regularized boundary integral equation methods for open-arc scattering problems in thermoelasticity |
| topic | Numerical Analysis |
| url | https://arxiv.org/abs/2507.05747 |